added gke_nodepool_taint.sh

gke_nodepool_taint.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2021-04-16 20:35:02 +0100 (Fri, 16 Apr 2021)
+#
+#  https://github.com/HariSekhon/bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(dirname "${BASH_SOURCE[0]}")"
+
+# shellcheck disable=SC1090
+. "$srcdir/lib/utils.sh"
+
+# shellcheck disable=SC1090
+. "$srcdir/lib/kubernetes.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Taints/untaints all nodes in the given GKE nodepool with your taint spec
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<cluster_name>] <node_pool_name> <taint_spec>"
+
+help_usage "$@"
+
+min_args 1 "$@"
+
+if [ $# -eq 2 ]; then
+    export GCLOUD_CONTAINER_CLUSTER="$1"
+    node_pool="$2"
+elif [ $# -eq 1 ]; then
+    node_pool="$1"
+else
+    usage
+fi
+
+node_pool="$1"
+shift || :
+
+kube_config_isolate
+
+nodes="$(VERBOSE=1 "$srcdir/gke_nodepool_nodes.sh" "$node_pool")"
+
+# want splitting
+# shellcheck disable=SC2086
+kubectl taint nodes $nodes "$@"